Dynamic mechanical response of a Ni_(45.7)Ti_(29.3)Hf_(20)Pd_5 alloy

Emre Acar

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Dynamic mechanical response of a Ni_(45.7)Ti_(29.3)Hf_(20)Pd_5 alloy

机译：Ni_（45.7）Ti_（29.3）Hf_（20）Pd_5合金的动态力学响应

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Phase transformation and damping properties of a Ni_(45.7)Ti_(29.3)Hf_(20)Pd_5 (at%) alloy was studied through Dynamic Scanning Calorimetry and Dynamic Mechanical Analysis techniques. Damping properties were characterized as functions of aging, temperature cycling, frequency and heating rate. The maximum damping capacity of the alloy was determined to be 0.215 during thermoelastic martensitic phase transformation, that is comparable to NiTi alloys. It was found that aging at temperatures ranging from 300 ℃ to 900 ℃ for 1.5 h was effective in controlling damping capacity of the alloy as well as altering the phase transformation temperatures. The damping capacity of the Ni_(45.7)Ti_(29.3)Hf_(20)Pd_5 alloy increased with heating rate and decreased with frequency.

机译：通过动态扫描量热法和动态力学分析技术研究了Ni_（45.7）Ti_（29.3）Hf_（20）Pd_5（at％）合金的相变和阻尼特性。阻尼特性被表征为老化，温度循环，频率和加热速率的函数。在热弹性马氏体相变过程中，合金的最大阻尼能力确定为0.215，与NiTi合金相当。研究发现，在300℃至900℃的温度下进行1.5 h时效处理对于控制合金的阻尼能力以及改变相变温度是有效的。 Ni_（45.7）Ti_（29.3）Hf_（20）Pd_5合金的阻尼能力随加热速率增加而随频率降低。

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来源
《Materials Science and Engineering》 |2015年第1期|169-175|共7页
作者
Emre Acar;
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作者单位

Department of Aircraft Engineering, Erciyes University, Melikgazi, Kayseri 38039, Turkey;

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原文格式 PDF
正文语种 eng
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关键词
Aging; Shape memory alloys; Martensite; Internal friction; Phase transformation;

机译：老化;形状记忆合金;马氏体内部摩擦;相变;

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1. Effects of ageing on microstructure and superelastic behavior of [110]-oriented Ni_(45.3)Ti_(29.7)Hf_(20)Pd_5 single crystals [J] . E.E. Timofeeva, E.Y. Panchenko, Y.I. Chumlyakov, Materials Science and Engineering . 2016,第SEPa30期

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Dynamic mechanical response of a Ni_(45.7)Ti_(29.3)Hf_(20)Pd_5 alloy

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